Can you provide an example of what you mean re. the difference between sheet music and a jazz chart? I have played classical and jazz winds for years and consider them almost synonymous. (You probably won't find "changes" in the kind of sheet music other than that musicians call a "chart.")

I don't feel that any written music can or could adequately convey the feel, shape, or nature of the music--you've got to work through it with the group, or hear someone who already understands the piece.